The Amplification in Strong Electric and Magnetic Fields

TL;DR

This paper investigates how strong, non-uniform electric and magnetic fields can significantly amplify electromagnetic waves, with potential applications in optical and infrared wave amplification.

Contribution

It demonstrates that amplification gain in such fields can be increased by a factor of the relativistic gamma, providing new insights into wave amplification mechanisms.

Findings

Gain is increased by a factor of gamma compared to magnetic undulators.

Numerical estimates show potential for optical and near-infrared wave amplification.

The system's configuration allows for enhanced wave amplification in strong fields.

Abstract

We consider the amplification in strong electric (magnetic) fields that are uniform along the direction of the electron motion and are not uniform in the transverse direction. It is shown that in such a system the gain is increased compared with that of a magnetic undulator by a value of the order of gamma ( gamma is the relativistic factor). Numerical estimates are presented that determine the possibility of amplification of a test wave in the optical and near infrared bands.